Linux Command Learning record (v)

ln command: Create a link (shortcut)

Each file has an indicator number, which is the inode;

The hard link principle is that the linked two files share the same file content, that is, the same inode. BUG: You can only create hard links to files, and you cannot create hard links to directories .

Hard link schematic diagram: ln file1 file2

Soft Link Features: If the deletion of file2,file1 is not affected, but if the deletion of file1,file2 becomes a dead link, pointing to the file is missing;

Soft links can point to directories

Soft link schematic: ln-s file1 file2 creating file1 soft links file2

sudo command: Run command as root (substitute user do)

sudo su: always be the root user

Linux Command Learning record (v)